YASKAWA U1000 - Page 310

Overload Tolerance Cooling Ability Overload Characteristics
A: Max. speed for 200LJ and above
B: Max. speed for 160MJ to 180 LJ
C: Max. speed for 132MJ and below
Rated Speed=100% Speed
60 s
Continuous
A
B
C
Speed (%)
Torque (%)
100
150
1
10
100120
167 200
55
50
0
Motor is designed to effectively cool
itself even at low speeds.
Continuous operation with 100% load
from 6 Hz to E1-06, Motor Base
Frequency.
Setting 3: Vector Motor (Speed Range for Constant Torque: 1:100)
Use this setting when operating a drive-dedicated motor that allows constant torque in a speed range of 1:100. This motor type
is allowed to run with 100% load from 1% up to 100% speed. Running the motor below 1% speed with 100% load will trigger
an overload fault.
Overload Tolerance Cooling Ability Overload Characteristics
A: Max. speed for 200LJ and above
B: Max. speed for 160MJ to 180 LJ
C: Max. speed for 132MJ and below
150
100
90
50
0
1
100
120
167
200
A
B
C
Continuous
Speed (%)
Rated Speed=100% Speed
Torque (%)
60 s
Motor is designed to effectively cool
itself at speeds near 0.6 Hz.
Continuous operation with 100% load
from 0.6 Hz to E1-06, Motor Base
Frequency.
Continuous operation below 0.6 Hz
may cause an oL1 or oL2 fault.
Setting 4: PM Derated Torque Motor
Use this setting when operating a PM motor. PM motors for derated torque have a self-cooling design and the overload tolerance
drops as the motor slows. Electronic thermal overload is triggered in accordance with the motor overload characteristics,
providing overheat protection across the entire speed range.
Overload Tolerance Cooling Ability Overload Characteristics
Motor Speed (%)
150
60 s
130
100
67
50
0
0 10 100 150
80
85
33
Torque (%)
Continuous
Motor is designed to produce 100%
torque at base speed. Built with
effective cooling capabilities.
Reaching 100% when operating at
below the base frequency causes a
motor overload fault (oL1). The drive
fault output closes and the motor coasts
to stop.
Setting 5: Constant Torque PM Motors (Constant Torque Range of 1:1500)
Sets necessary protection characteristics when driving a PM with constant torque. Running the motor below 0.07% speed with
100% load will trigger an overload fault.
5.8 L: Protection Functions
310
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual